Boring-machine.



J. D. PUFF.

v BORING MACHINE.

APPLICATION FILED SEPT. 10, 1912.

1,168,224. Patented Jan. 11, 1916.

5 SHEETSSHEET I.

j'l'la. 1

.J. D. PUFF.

BORING MACHINE.

APPLICATION FILED SEPT-10,1912.

1,168,224, Patented Jan.11, 1916.

5 SHEETS-SHEET 2- Jim 2 J. D. PUFF.

BORING MACHINE.

APPLICATION FILED SEPT. 10, 1912.

Patented Jan. 11, 1916.

5 SHEETS-SHEET 3 mw aw NNNW Swim J. D. PUFF.

BORING MACHINE.

APPLICATION FILED SEPT. 10, 1912.

1,168,224. Patented Jan. 11, 1916.

5 SHEETS-SHEET 4- THE COLUMBIA PLANOGRAPH CO., WASHINGTON, D. c.

J. D. PUFF.

BORING MACHINE.

APPLlCATlON FILED SEPT. 10, 1912.

1,168,224, Patented Jan. 11, 1916.

5 SHEETS-SHEET 5- 0 fla 71544 II/ fla /#11101 THE COLUMBIA PLANOGRAPH co., WASHINGTON, n. c.

JOHN D. PUFF, OF EAST ST. LOUIS, ILLINOIS.

BORING-MACHINE.

Specification of Letters Patent.

Patented Jan. 11, 1916.

Application filed. September 10, 1912. Serial No. 719,642.

To all whom it may concern Be it known that I, JOHN D. PUFF, a citizen of the United States, and resident of East St. Louis, Illinois, have invented certain new and useful Improvements in BoringMachines, of which the following is a specification.

This invention relates to improvements in boring machines and has for its object a plurality of horizontally arranged boring bits, a means for driving the bits forwardly, a plurality of vertically arranged boring bits, a means for advancing said bits upwardly, and a lever mechanism for simultaneously advancing the horizontal bits and raising the vertical bits. 7

A. further object is to construct a boring machine which is designed to bore horizontal and vertical holes in barrel heads so that rods and fastening devices can be inserted through the holes for supporting the heads in position in the barrel.

A further object of my invention is to construct a machine with two sets of horizontally arranged boring bits, the same advancing forwardly simultaneously with its rotation, a means for automatically releasing one set of the bits so that it may return to its normal position in advance of the opposite set and vertically arranged bits for boring vertical holes simultaneously with the horizontal operation.

Figure 1 is a side front view of my improved boring machine. Fig. 2 is a top plan view of the same. Fig. 3 is an end view looking from the left of Fig. 1. Fig. 4 is a vertical sectional view taken on the line 4.-l of Fig. 2 and viewing the same in the direction indicated by the arrow on the line 4-4. Fig. 5 is a detail enlarged sectional view of the mechanism in which the vertical bits are supported and raised, the same taken on the line 55 of Fig. 1. Fig. 6 is an enlarged detail, horizontal sectional view of the belt and pulley mechanism by which the vertical bits are rotated, the same taken on the line 66 of Figs. 1 and 4. Fig. 7 is a detail top plan view of the sliding bearing made use of and which constitutes a part of the vertical bit supporting mechanism. Fig. 8 is a detail perspective view of one of the clamp arms made use of for supporting the barrel head in position, a part thereof being broken away. Fig. 9 is a detail top plan view of the lever mechanism by which the horizontal bits are advanced. Fig. 10 is a detail side view of the lever mechanism by which the vertical bits are elevated. Fig. 11 is a top plan view of the same. Fig. 12 is a top plan view of a portion of a barrel head showing the bits in their operative position, a part thereof being broken away, one set of the bits having performed their function and re turned to their normal position. Fig. 13 is a detail sectional view of a barrel showing the head therein and the rods and fastening devices used in the holes made by the boring machine for supporting the head in position.

The construction of my invention consists of a bed plate 1% mounted upon suitable standards 15; the said bed plate is provided with a plurality of grooves 16 extending the entire width of the bed plate, which accommodate projecting lugs 17 formed on the under surface of the tool plates 18 adjustably mounted on the bed plate, and on each of the tool plates are located journal boxes 19 and 20 in which the tool spindles 21 have bearing On the spindles and between the journals 19 and 20 are mounted pulleys 22 which are keyed to the spindles so that rotation is imparted thereto yet providing free sliding movement of said spindles in the pulleys and journals, the purpose of which is to permit the tools or bits23 supported in the chucks 24 formed on the end of the tool spindles to rotate as well as to be advanced forwardly to enter the material located on the material plate 25. On the tool plates are also provided guides 26, which have openings of proper diameter to permit the tools or bits to freely pass therethrough and to properly hold the tools or bits in alinement so that the holes bored thereby are absolutely true.

To the under surface of the bed plate is firmly attached a pair of depending brackets 27 and 28, and to the bottom ends thereof are pivotally attached lever arms 29, the upper ends thereof being bifurcated as indicated by the numeral 30 which straddle collars 81 located on the tool spindles 21 immediately to the'rear of the chucks 2 1; the bifurcated ends of the levers are suitably slotted as in dicated by the numeral 82 so as to provide for free movement of the levers when advancing the tool spindles forwardly. The opposite ends of the tool spindles are provided with collars 33, and on said. spindles adjusted position by means of the machine screws 35 passing through the slots formed in the base plate and supported in the tool plates.

The material plate is formed integral with the base plate and at a raised position, the said plate being semi-circular in form (see Fig. 2), the sides provided with projections 37 against which the periphery of the material placed on the plate contacts The straight edge of the plateis also provided with a projection 38, and in alincment with the straight edge is formed elongated slots 39 through which the vertical bits 40 operate; the construction and operation of which will be hereinafter fully described. On this material plate is located onehalf of the barrel head, and the said material constituting the barrel head is held in clamped position on the plate by means of the clamping arms 41, which are pivotally attached at the point indicated by the numeral 12 to two of the tool plates, the opposite end having handles 43, by which the clamping arms are manipulated, and each of the arms have a bent projection 14: which contacts with the curved edge of the barrel head holding the same flat upon the plate, and preventing the same from bulging, the remaining portion of the arms contacting with a portion of the upper surface of the barrel head so as to lock the same against the plate preventing the same from being raised during the operation of the vertical bits 40 and a downward pressing movement of the clamping arms is accomplished by means of the guide bar 45 extending across the entire bed plate slidingly in advance of the straight edge portion of the material plate, the under surface being inclined as indicated by the numeral 46 (see 7 Fig. 4).

The construction of all of the horizontal tool plates, and operating mechanism thereon is of identical structure and over the pulleys 22 are passed belts 47 and 48 by which the bits are properly rotated.

The forward movement of the bits is accomplished by a mechanism consisting of rock arms 19, 50, and 51 all mounted upon a shaft 52 which is supported in hangers 53 secured to the under side of the bed plate. To the rock arm 19 is attached one end of the connecting rod 5 1 which is connected to a foot treadle 55. To the ends of the rock arms50 and 51 areattached connecting rods 56 and'57, the opposite ends attached to the bifurcated levers 29, and by means of the the rock arm 50 is a spring 60; the lever 51 is also provided with a clutch collar 61 and is rigidly secured to the shaft, 52'. The'contacting surfaces of the collars '58 and 61 are toothed as shown and when the levers are operated the shaft 52 is partly turned, advancing all of the horizontal bits simultanee ously until the rock arm 50 contacts with and rides over an inclined surface 62 formed on the bottom end of a hanger bracket 63 suspended from the bottom of the material plate; by this action the lever after having advanced upon the inclined surface, the clutch members are released and the rock arm 50 will return to its'normal position together with the pair of horizontal bit-s controlled thereby by means of the action of the coiled springs located on the left hand set of tool spindles. This operation removes the bits 6 1 after they have performed their function, and at a period prior to the completion of the forward movement of the bits 65, which bits will then continue to advance boring through the material in direct alinement with the holes 66 already bored by the bits 64 continuing to cut through the material and in this manner prevents the points of both bits from contacting: and making the hole extend entirely through the board. The function performed by the horizontal bits is clearly shown in Fig. 12.

On the shaft 52 and near each end thereof is mounted a compound lever 67, which controls the vertical movement of the vertical bits; these compound levers are composed of a casting 68 rigidly secured to said shaft,

the free end suitably recessed to accommoon the collar 7 5 located around the verticaltool spindles76 (see Fig. 5).: During the partial rotation of the shaft 52 the compound lever mechanism 67 first assumes the position as shown by dotted lines in Fig. 10 before the vertical bits are raised. After the bits have been operated and the holes bored, the bits are returned to their normal position by means of the coiled springs located on the tool spindles.

The construction of the vertical bit mechanism is as follows: Suspended from the bed plates are brackets 77 and 78, the same being located side by side and bolted together (see Fig. 1) each set of brackets are connected together by cross-bars T9 and 80 provided with elongated slots 81 and 82. Through these slots are inserted machine screws 83, the threaded ends communicating with elongated projections 8% which form a part of the tool spindle bearing 85. The bearings are connected together by yokes 86. In these bearings is located a sleeve 87, this sleeve having a key 88 which operates in a keyway 89 formed in the two spindles '76 and on this sleeve between the yokes 86 is a pulley 90 by which the tool spindle is rotated. The bottom end of the tool spindle is provided with a rigid collar 91. and between said collar and the bottom edge of the sleeve is a coiled spring 92 by which the tool spindle is brought back to its normal position. The elongated projections 8+ act as guides for the bearings and the same are supported in grooves 93 formed on the inner surface of the cross bars 79 and 80 (see Fig. 5), and by means of the elongated slots 81 and 82 the position of the vertical bits can be horizontally adjusted.

The horizontal cross bars 79 are provided with hubs 9:41 and 95 in which are located shafts 96, these shafts being provided with horizontal pulleys 97, and on the opposite side of one of the cross bars is a bracket 98 on which an idle pulley 99 is mounted. Over these pulleys and the pulleys 90 operates a belt 100, this belt extending downwardly over a pulley 101 mounted on a line shaft 102 which is supported in bearings 103 located beneath the machine. On this line shaft is mounted pulleys 104 and 105 which operate belts -17 and i8 placing in ro tation the pulleys 22 of the horizontal tool spindles and the machine is driven by means of the belt 106 from any source of supply.

The machine is constructed for the purpose of boring holes edgewise through the material forming the barrel heads so that rods may be inserted through the openings for fastening the heads into barrels, likewise to bore vertical holes so that fastening devices such as those indicated by the numeral 107 shown in Fig. 13 can be inserted and the operation of my invention is as follows: The material to be bored is placed on the material plate which as shown in Fig. 2 is semi-circular for the purpose of boring barrel heads but the said plate can be constructed rectangular so that box tops can be similarly bored. The material after being placed in position on the plate is clamped in position by means of the clamping arms t1 pressed inwardly by means of the handles 4-5; the operator then by pressing downwardly on the foot treadle operates the lever mechanism on the shaft 52 advancing the bifurcated levers forwardly conveying with them the rotating bits G l and the position of the bits is such, and by means of the clutch mechanism on the shaft 52 the bits 64: are advanced in the material their proper length and are automatically re leased before the bits 65 continue their forward travel in order to meet the opening formed by the bits 64. During the movement of the shaft the compound lever mechanism is operating to a position as shown by dotted lines in Fig. 10 and at the moment of the release of the bits 64, the vertical bits are raised to bore the vertical holes in the straight edge of the material and by the release of the foot treadle the entire mechanism is brought back to its normal position by the expansion of the coiled springs on the various tool posts.

Having fully described my invention what I claim is:

1. A boring machine comprising a bed plate mounted upon standards, tool plates laterally adjustably mounted on the bed plate, a material plate located on the bed plate between the tool plates, tool spindles mounted in bearings carried by the tool plates, bifurcated levers connected to the tool spindles by which the same are advanced forwardly bringing the bits carried thereby in contact with the edge of the material to be bored, pivoted spring clamping arms for supporting the material on the material plate, two vertical tool spindles suspended beneath the bed plate and adjustably mounted and means for elevating the same at a proper period to bore vertical holes in the material and a clutch mechanism by which one set of the tool spindles is automatically released in advance of the other set, the other set continuing forward making; one continuous hole through the material, and means for releasing and automatically returning all of the bits to their starting position.

2. A boring machine comprising a plurality of horizontally arranged rotating and adjustable spindles, bits carried thereby for boring holes through the edge of the material located between the bits, a pair of rotating adjustably mounted vertical spindles, bits carried thereby and arranged to bore vertical holes in the material, and a rock arm mechanism for advancing the bits in contact With the material, a clutch for auto- In testimony whereof, I have signed my matically releasing one set of the horizonname to this specification, in presence of two tal bits in advance of the other so as to presubscribing Witnesses.

vent the point of the bits from contacting JOHN D. PUFF. during their operation, substantially as \Vitnesses:

specified, and means for returning the re- ALFERD A. EIoKs,

maining bits to their starting position. 4 WALTER C. STEIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

